Add package:characters to DEPS

Change-Id: I700442bba24dfcb95862a0440374543f2a1a8e23
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/209060
Reviewed-by: Stephen Adams <sra@google.com>
Commit-Queue: Stephen Adams <sra@google.com>

.dart_tool/package_config.json

@@ -11,7 +11,7 @@
     "constraint, update this by running tools/generate_package_config.dart."
   ],
   "configVersion": 2,
-  "generated": "2021-07-30T20:37:49.663747",
+  "generated": "2021-08-04T21:18:41.561058",
   "generator": "tools/generate_package_config.dart",
   "packages": [
     {
@@ -150,6 +150,12 @@
       "packageUri": "lib/",
       "languageVersion": "2.12"
     },
+    {
+      "name": "characters",
+      "rootUri": "../third_party/pkg/characters",
+      "packageUri": "lib/",
+      "languageVersion": "2.12"
+    },
     {
       "name": "charcode",
       "rootUri": "../third_party/pkg/charcode",

DEPS

@@ -81,6 +81,7 @@ vars = {
   "boringssl_rev" : "1607f54fed72c6589d560254626909a64124f091",
   "browser-compat-data_tag": "v1.0.22",
   "browser_launcher_rev": "c6cc1025d6901926cf022e144ba109677e3548f1",
+  "characters_rev": "6ec389c4dfa8fce14820dc5cbf6e693202e7e052",
   "charcode_rev": "84ea427711e24abf3b832923959caa7dd9a8514b",
   "chrome_rev" : "19997",
   "cli_util_rev" : "8c504de5deb08fe32ecf51f9662bb37d8c708e57",
@@ -329,6 +330,8 @@ deps = {
   Var("dart_root") + "/third_party/pkg/boolean_selector":
       Var("dart_git") + "boolean_selector.git" +
       "@" + Var("boolean_selector_rev"),
+  Var("dart_root") + "/third_party/pkg/characters":
+      Var("dart_git") + "characters.git" + "@" + Var("characters_rev"),
   Var("dart_root") + "/third_party/pkg/charcode":
       Var("dart_git") + "charcode.git" + "@" + Var("charcode_rev"),
   Var("dart_root") + "/third_party/pkg/cli_util":